http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56881
--- Comment #7 from Mikael Pettersson <mikpe at it dot uu.se> 2013-04-13 20:39:03 UTC --- Started with Bernd Schmidt's "Optimize calls to functions that return one of their arguments" patch in http://gcc.gnu.org/r187459, originally proposed in <http://gcc.gnu.org/ml/gcc-patches/2012-04/msg01817.html>.
